Say Hello to a real value in great sonar resolution, detail , power , and duel- frequency performance- with temp/speed/distance- thats truly a good buy . Say Hello to the new Sea Finder 480 DF ! 5" (12.7 CM ) diagonal screen . Film Super Twist LCD. High-definition 480 x480 resolution . Backlit screen and keypad ,16-level grayscale
Sonar :
●  Depth capability to 1500 ft* ( 457 m ) with 4000 watts of peak-to-peak power ( 500W RMS )
●  High-performance , low-profile 50/200 kHz Skimmer® duel-frequency transducer with built-in temp sensor delivers an extra wide angle of fish detection area with high sensitivity settings - Operates at boat speeds up to 70 mph ( 61 kts )
●  SP-U transom-mount sensor included for precise trolling speed/distance log readings
●  FishReveal™ feature exposes fish targets hidden in surface clutter , weedbeds , thermoclines , and other types of underwater cover
●  HyperScroll™ feature locates and displays fish targets at higher boat speeds
●  Advanced Signal Processing (ASP™ ) automatically adjusts your settings for the best sonar picture
●  Patented GRAYLINE® separates fish from nearby structure and botom
●  Advanced Fish I.D.™ shows underwater targets in different sizes of fish symbols
●  FishTrack™ displays target depth readings above fish symbols
●  Surface water temperature readings come from a built-in temp sensor in the transducer
●  Unique display feature lets you combine a panel of sonar data readings with your sonar graph in one east-to-read display
●  Zoom with zoom bottom tracking and easy zoom-in/out control
●  Selective on/off sonar alarms : Shallow, Deep , and Fish
Performance :
●  High-speed screen updates during depth range changes for uninterrupted viewing
●  Internal back-up memory keeps stored GPS data and sonar settings safe and accessible for years
●  Completely sealed and waterproof , even for use in harsh saltwater environments
●  Full one-year warranty

 Owners Manual :  Download